It's a pipe for an industry that is nearly dead. There is nothing proprietary about 2 stroke pipes, nor is there enough money to be made for anyone to spend a bunch of money on a lawyer to gain the 7 cents back. Furthermore, he would have to prove that you had a direct effect on his sales, which he has none, and has not had any in years.
Sent from my SAMSUNG-SM-G891A using Tapatalk